Accumulation (Latin accumulare = to pile up, to pile up) is the accumulation, storage, accumulation, deposition of sediments . Most of these deposits are made by the sea or rivers, which deposit loose sediments ( sand , gravel ). The accumulation depends on the flow velocity, grain size, gradient, flow rate, material load , friction , channel cross-section and turbulence .
In glacial morphology (describes surface formation by glaciers and their meltwater) one differentiates between the following forms of accumulation:
- Unsorted sediment , all grain sizes available.
- Glacial sediment (coarse material)
- Boulder clay ( clay and silt )
- Boulder clay (calcareous).
- Large erratic blocks, also known as boulders .
Accumulation is also called the accumulation of snow masses on a glacier and the subsequent formation of new ice.
In soil science , the concept of accumulation is also extended to the accumulation of water in the soil with a suitable morphology.